9972507455025 has 24 divisors (see below), whose sum is σ = 16488026913024. Its totient is φ = 5318622926400.

The previous prime is 9972507455021. The next prime is 9972507455033. The reversal of 9972507455025 is 5205547052799.

9972507455025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9972507455025 - 2² = 9972507455021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9972507455025.

It is not an unprimeable number, because it can be changed into a prime (9972507455021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8799295 + ... + 9867755.

It is an arithmetic number, because the mean of its divisors is an integer number (687001121376).

Almost surely, 2^{9972507455025} is an apocalyptic number.

It is an amenable number.

9972507455025 is a deficient number, since it is larger than the sum of its proper divisors (6515519457999).

9972507455025 is a wasteful number, since it uses less digits than its factorization.

9972507455025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192921 (or 1192916 counting only the distinct ones).

The product of its (nonzero) digits is 39690000, while the sum is 60.

The spelling of 9972507455025 in words is "nine trillion, nine hundred seventy-two billion, five hundred seven million, four hundred fifty-five thousand, twenty-five".